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Finding the Fourth Proportional to 306,540.70, 459,811.05 and 84,924.70

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Solution

The fourth proportional to 306,540.70, 459,811.05 and 84,924.70 is: 127,387.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,540.70 : 459,811.05 = 84,924.70 : x
  2. Step 2: Convert to fraction form
    306,540.70/459,811.05 = 84,924.70/x
  3. Step 3: Cross multiply
    306,540.70x = 459,811.05 × 84,924.70
  4. Step 4: Simplify right side
    306,540.70x = 39,049,315,477.94
  5. Step 5: Solve for x
    x = 39,049,315,477.94/306,540.70
  6. Step 6: Final answer
    x = 127,387.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.